How to Get a Python Program to Do Nothing with an If Statement?
How can I get a Python program to do nothing when using an if statement?
For example, given the following code:
if (num2 == num5):
# No changes are made
How can I implement Python do nothing in such a case?
Using a pass Statement:
The pass statement in Python does nothing but allows the program to continue running without any action being taken. It’s often used as a placeholder where code is required syntactically but no action is needed. For instance:
if (num2 == num5):
pass # Python do nothing
It’s simple and explicit, and you’ll often see this in code as a way to keep things neat while you’re still working on it.
Empty Block:
Building on Fatima’s suggestion, you can also leave the block empty, though it’s less explicit compared to pass. While it works, some developers might find it less clear because it gives the impression that you might have forgotten to add code. Still, it’s an option:
if (num2 == num5):
# Python do nothing
Personally, I’d recommend pass for readability, but hey, this approach works just as well if you’re in a hurry!
Using a Lambda Function That Does Nothing:
Toby’s point is spot on, but if you’re looking to get a bit creative, here’s another idea: use a lambda function that does absolutely nothing. It’s unconventional, and honestly, it might spark some curiosity if someone else sees your code. Here’s what I mean:
if (num2 == num5):
(lambda: None)() # Python do nothing
This is a fun way to achieve the same result. Not the most practical, but if you’re exploring all the ways Python can work, it’s worth a try!